Analysis And Modeling On The Car-following Behavior With Considering The Impact Of Lateral Vehicles

The traditional car-following theory is mainly research on the theory of the state of the following car follow with the leading car on single lane. The theory expressed the diversified state of the car-following process with mathematical model. The car-following model is the basis of the Capacity evaluation of research and service levels in macro traffic flow theory, and also is the theoretical basis for an integral of the Traffic micro-simulation. Most of the cities'main roads are Multi-lane. These roads determines the city's operation capacity to a great extent. In order to better understand the multi-lane traffic flow characteristics, it is necessary to improve the traditional car-following model. By modeling the lateral effects of the car-following process, we can descript the actual driving behavior more realistically, to provide the theory support for microscopic traffic simulation, the improvement of transport facilities, traffic safety evaluation.The diversified behaviors of the car steering can be expressed from efficiency and security. On the one hand, from the point of view of efficiency, Under normal circumstances, the driver always wanted in the shortest possible time to reach the destination, This will allow vehicles in the case of the conditions to achieve the greatest possible speed. On the other hand, from a security point of view, driver must avoid collisions with other vehicles. This requires the vehicle slow down or avoid to prevent the collision when it is close to other vehicle a certain extent. Particularly in the case of large density of traffic, under constraints of the Efficiency and security of conflicting, the speed of vehicle has larger fluctuation.Whether the location of the course or the speed of change, reflected in both the vehicle itself can be seen as caused by the change of acceleration. The acceleration contains two meaning, Value on the size and direction. Since the acceleration is a vector, the use of accelerometers to measure the vehicle under different circumstances in a state of change is more appropriate. According to Newton's second law of physics, force changes in the vehicle led to its change of acceleration. The force model used to express the ideas of the behavioral change of vehicles is feasible. in the process of running to the target, vehicles moving forward momentum can be regarded as target points to attract it. Reflected in the model that is the target point on an attractive vehicle. This is the driving force of vehicles and reportedly fled to the target points. Because of the existence of other vehicles the process of the vehicle running to target is unlikely to have been a free-flow speed. Target points to the process of moving vehicles or obstacles encountered on the car can be seen as obstacles to the role of objects. Vehicles suffered impediment is reflected in the model vehicle on the road car similar to the role of repulsion. We create the model based on the"attraction"and "repulsion"of the interaction the car-following behavior. First based on this idea to establish the car-following model, then consider the impact of lateral vehicle factors influence to establish lateral vehicle effects model. Finally, the two together, establish an integrated model-following behavior.This article contains five chapters, each chapter's main content are as follows:The first chapter is devoted to the thesis of the research background, purpose and significance. Analysis and summarizes the relaxation behavior at home and abroad with the research model and the actual status of the new problems arising.The second chapter firstly describes the general characteristics of car-following behavior, then specifically description the general idea of establishing the model. Analysis of the impact of state car-following behavior. Then from "efficiency" and "security" point of view, use of "gravity" and "repulsion" of the characteristics of the interaction to establish the car-following model.Chapter Three detailed analysis of the lateral process of the moving vehicle (mainly referring to the adjacent lane of traffic) for the impact of the role of the target vehicle. Establish the lateral vehicle effects model based on the "gravity" and "repulsion" of the interaction characteristics, and combination it with the above car-following mode. Establish an integrated car-following behavior model.Chapter Four calibrate the parameter and validate the car-following model in Chapter Two. Design the lateral car-related data collection program of the experimental data and detailed analyses the data. Confirmed the effectiveness of the lateral vehicle effects model in Chapter Three.Chapter Five summarize the full text's work, recalling the research papers and major research results, proposed work plan for the next step.